Extended DoF and achromatic inverse imaging for lens and lensless MPM camera based on Wiener filtering of defocused OTFs

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Abstract

Optimal optical transfer function (OTF) is proposed for RGB inverse imaging with extended depth of focus (DoF) and diminished color aberrations. This optimal OTF is derived as the Wiener filter of broadband defocused OTFs. The performance of this new inverse imaging is demonstrated for optical setups with lens and lensless with a multilevel phase mask (MPM) instead of the lens. The later lensless system designed for the wavelength range (400-700) nm and DoF range (0.5-1000) m demonstrates the best performance.
Original languageEnglish
Article number051204
Number of pages14
JournalOptical Engineering
Volume60
Issue number5
DOIs
Publication statusPublished - 5 Jan 2021
Publication typeA1 Journal article-refereed

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